Patent GB-191017738-A (GB)
Title: Machines for Winding Cones and Tubes of Paper and similar Material.
Inventor: COMINGS WILLIAM RIGHTER
Filed: 1910-07-26
Granted: 1910-09-26
Abstract: 17,738. Comings, W. R. July 26. Paper tubes.-A machine for making spirally wound tubes has a series of mandrels carried by disks rotated intermittently, and means for rotating and moving axially one of the mandrels to wind a strip of material spirally and simultaneously moving another mandrel axially in the opposite direction to doff a finished tube. Sufficient mandrels are provided to enable a wound tube to dry sufficiently to retain its form before the mandrel reaches the doffing position. Rolls of strip material are carried on turntables B, B<1> with independent stands allowing either to be removed, the movement of the turntables being controlled by brakes comprising weighted levers D, D<1>, the ends d<2>, d<3> of which bear against the under surfaces of the tables. The strip C passes over a pulley e<4> at the end of a spring take-up arm E, and is guided over a looping-device to a pasting-device comprising a paste-box H, a paste-roll h<2>, Fig. 12, a flanged doctor roll h<3>, and a doctor plate h<4> of ordinary construction, where part only of the width of the strip is pasted. The looping-device consists of an arm pivoted at g and having a guide g<2> at its free end, over which the strip passes. A crank operated by a rod g<7>, against the lower end of which the journal boxes of the mandrels act as tappets, causes the looper to draw an extra amount of strip from the rolls just before the strip is severed. The strip passes from the pasting-device to the mandrels, of which a series is mounted in disks L, M rotated intermittently by a one-tooth pinion, not shown. Each mandrel proper comprises a hollow cone K, Fig. 13, with two internal members T, T<1> adapted to slide over one another to grip the end of the strip between their protruding ends. Each mandrel spindle has a plain portion adapted to slide through a journal box m, Fig. 7, on a disk M, a screw-threaded portion k<7> which works through a nut l on the disk L as the mandrel rotates, and an end portion k<5> adapted to engage the mandrel-rotating device. This device comprises two slotted spindles Q, Fig. 10, each engaging a mandrel, and geared together to rotate in opposite directions. One rotating mandrel is advanced by its nut l, Fig. 7, through a disk M', and the strip is wound spirally on the advancing cone. At the same time, a finished tube, which has been carried round by the disks M, L, is removed from the other rotating mandrel as it is withdrawn by its nut l, through the doffing-disk M'. The spindles Q are driven through a suitable clutch mechanism s<1>, Fig. 4, and a shaft carrying a brake disk engaged by a band brake v<4>, v<5> operated by a weighted lever V<2>. A mutilated disk on the shaft has a concavity q<5> engaged by a curved guide p<4> on a pulley P, to position the spindles so that the mandrel spindles k<5> can enter and leave the slots in the spindles Q when the disks L, M are rotated. The mandrels are positioned by a guide on the disk L. The backward movement of a full mandrel operates a slide U, Fig. 1, on the bed of the machine, to control the clutch s<1> and brake lever V<2>, and to set the parts T, T<1> of the mandrel to receive the end of the strip C. The slide is returned, the lever V<2> raised, and the parts T, T' operated to grip the strip by suitable cams, not shown, on the shaft of the pulley P. The last turn of the strip at the base of the cone is laid annularly by a guide finger operated from the slide U, which also, through lever mechanism, not shown, causes the pasting - device to travel parallel to the axis of the mandrel during the laying of the annular turn. The strip-severing device comprises a cutter m<3>, Fig. 12, for each mandrel, carried by the disk M', over which cutter the strip passes to the mandrel, and an adjustably fixed cutter m<4>, between which and the cutter m<3> the strip is severed when the disk M' rotates. The end of the strip is laid by means of presser fingers Y, Z. The free end of the severed strip is thrown on to the next mandrel by a spring-actuated pivoted arm, the end of which is supported by the strip until this is cut. The inner lap of the small end of the cone is laid and burnished by a continuously rotating rod J, Fig. 7, with a rounded end, which is thrown forward into the end of each cone, and withdrawn by a cam p<14>. A lever pivoted at p<7> carries type p<9> at one end, and at the other engages a slide p<10> operated by a cam p<11>, so as to imprint a name &c. on the finished cone.